books.google.de - Although this may seem a paradox, all exact science is dominated by the idea of approximation. Bertrand Russell (1872-1970) Most natural optimization problems, including those arising in important application areas, are NP-hard. Therefore, under the widely believed con jecture that P -=/= NP, their exact...https://books.google.de/books/about/Approximation_Algorithms.html?hl=de&id=EILqAmzKgYIC&utm_source=gb-gplus-shareApproximation Algorithms